text: #include "rxcpp/rx.hpp"
  
  #include "rxcpp/rx-test.hpp"
  #include "catch.hpp"
  
  
  SCENARIO("take sample"){
      printf("//! [take sample]\n");
      auto values = rxcpp::observable<>::range(1, 7).take(3);
      values.
          subscribe(
              [](int v){printf("OnNext: %d\n", v);},
              [](){printf("OnCompleted\n");});
      printf("//! [take sample]\n");
  }
  